西安电子科技大学学报（自然科学版）
西安電子科技大學學報（自然科學版）
서안전자과기대학학보（자연과학판）
JOURNAL OF XIDIAN UNIVERSITY(NATURAL SCIENCE)
2015年
3期
103-108
,共6页
测距码%混沌序列%自相关%互相关%Welch界
測距碼%混沌序列%自相關%互相關%Welch界
측거마%혼돈서렬%자상관%호상관%Welch계
ranging codes%chaotic sequence%autocorrelation%crosscorrelation%Welch bound
针对混沌序列数目众多、相关性能良好、安全性强、保密性高以及逼近高斯白噪声的统计特性，提出一种基于加权算法的改进型 Logistic混沌序列测距码。该码是通过对两个初值不同的改进型 Logistic 混沌序列进行加权处理、求和、量化得到的。采用基于相关峰旁瓣和 Welch 界两种测距码性能分析方法评估所提测距码在内的各种经典混沌序列测距码的性能。理论分析和仿真结果表明，基于加权优化混沌序列的测距码不仅平衡性大大提高，而且测距码性能良好，同时增强了测距码的安全性与保密性。
針對混沌序列數目衆多、相關性能良好、安全性彊、保密性高以及逼近高斯白譟聲的統計特性，提齣一種基于加權算法的改進型 Logistic混沌序列測距碼。該碼是通過對兩箇初值不同的改進型 Logistic 混沌序列進行加權處理、求和、量化得到的。採用基于相關峰徬瓣和 Welch 界兩種測距碼性能分析方法評估所提測距碼在內的各種經典混沌序列測距碼的性能。理論分析和倣真結果錶明，基于加權優化混沌序列的測距碼不僅平衡性大大提高，而且測距碼性能良好，同時增彊瞭測距碼的安全性與保密性。
침대혼돈서렬수목음다、상관성능량호、안전성강、보밀성고이급핍근고사백조성적통계특성，제출일충기우가권산법적개진형 Logistic혼돈서렬측거마。해마시통과대량개초치불동적개진형 Logistic 혼돈서렬진행가권처리、구화、양화득도적。채용기우상관봉방판화 Welch 계량충측거마성능분석방법평고소제측거마재내적각충경전혼돈서렬측거마적성능。이론분석화방진결과표명，기우가권우화혼돈서렬적측거마불부평형성대대제고，이차측거마성능량호，동시증강료측거마적안전성여보밀성。
Since the chaotic sequence has a lot of numbers,good relative performance,strong security, high security and approaching statistical properties of Gaussian white noise,a ranging code based on the weighted optimizing chaotic sequence is proposed.This code is obtained by two different initial improved Logistic chaotic sequences through weighting and summation and quantification.This paper analyses various classic chaotic sequences including the weighted optimizing chaotic sequence as the performance of the ranging code based on the peaks of autocorrelation and crosscorrelation,and the Welch bound.Theoretical analysis and simulation results show that the ranging code based on the improved Logistic chaotic sequence greatly improves the balance and that the ranging code performance is good and at the same time enhances the security and privacy of the ranging code.
